Add a WebDocument::watchCssSelectors(selectors)

Source/core/css/resolver/StyleResolverState.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 20 matching lines @@
 #include "core/css/resolver/FontBuilder.h"
 #include "core/dom/Element.h"
 #include "core/rendering/style/CachedUAStyle.h"
 #include "core/rendering/style/RenderStyle.h"
 #include "core/rendering/style/StyleInheritedData.h"
 
 namespace WebCore {
 
 class FontDescription;
 class RenderRegion;
+class StyleRule;
 
 class StyleResolverState {
 WTF_MAKE_NONCOPYABLE(StyleResolverState);
 public:
     StyleResolverState(Document*, Element*, RenderStyle* parentStyle = 0, RenderRegion* regionForStyling = 0);
     ~StyleResolverState();
 
     // In FontLoader and CanvasRenderingContext2D, we don't have an element to grab the document from.
     // This is why we have to store the document separately.
     Document* document() const { return m_document; }
@@ skipping 10 matching lines @@
     const RenderStyle* style() const { return m_style.get(); }
     RenderStyle* style() { return m_style.get(); }
     PassRefPtr<RenderStyle> takeStyle() { return m_style.release(); }
 
     void setParentStyle(PassRefPtr<RenderStyle> parentStyle) { m_parentStyle = parentStyle; }
     const RenderStyle* parentStyle() const { return m_parentStyle.get(); }
     RenderStyle* parentStyle() { return m_parentStyle.get(); }
 
     const RenderRegion* regionForStyling() const { return m_regionForStyling; }
 
+    void setCurrentRule(StyleRule* currentRule) { m_currentRule = currentRule; }
+    const StyleRule* currentRule() const { return m_currentRule; }
+
     // FIXME: These are effectively side-channel "out parameters" for the various
     // map functions. When we map from CSS to style objects we use this state object
     // to track various meta-data about that mapping (e.g. if it's cache-able).
     // We need to move this data off of StyleResolverState and closer to the
     // objects it applies to. Possibly separating (immutable) inputs from (mutable) outputs.
     void setApplyPropertyToRegularStyle(bool isApply) { m_applyPropertyToRegularStyle = isApply; }
     void setApplyPropertyToVisitedLinkStyle(bool isApply) { m_applyPropertyToVisitedLinkStyle = isApply; }
     bool applyPropertyToRegularStyle() const { return m_applyPropertyToRegularStyle; }
     bool applyPropertyToVisitedLinkStyle() const { return m_applyPropertyToVisitedLinkStyle; }
 
@@ skipping 67 matching lines @@
 
     FontBuilder m_fontBuilder;
 
     CachedUAStyle m_cachedUAStyle;
 
     ElementStyleResources m_elementStyleResources;
     // CSSToStyleMap is a pure-logic class and only contains
     // a back-pointer to this object.
     CSSToStyleMap m_styleMap;
     Vector<AtomicString> m_contentAttrValues;
+
+    StyleRule* m_currentRule;
 };
 
 } // namespace WebCore
 
 #endif // StyleResolverState_h